# Script to copy members (users and groups) from one AD group to another.
# Editable variables
$SourceGroup = "SourceGroupName"    # Enter your source group here
$TargetGroup = "TargetGroupName"    # Enter your target group here

# Get group members from the source group
$members = Get-ADGroupMember -Identity $SourceGroup

if ($members.Count -eq 0) {
    Write-Host "No members found in $SourceGroup."
    return
}

# Loop through all members and add them to the target group
foreach ($member in $members) {
    # Check if the member is already in the target group
    $isMember = Get-ADGroupMember -Identity $TargetGroup | Where-Object { $_.DistinguishedName -eq $member.DistinguishedName }
    if (-not $isMember) {
        try {
            Add-ADGroupMember -Identity $TargetGroup -Members $member.DistinguishedName
            Write-Host "Added: $($member.Name) ($($member.ObjectClass))"
        }
        catch {
            Write-Host "ERROR adding $($member.Name): $_"
        }
    } else {
        Write-Host "Already existed: $($member.Name) ($($member.ObjectClass))"
    }
}